Volute solid-liquid separation clarification device

Abstract

The invention discloses a volute solid-liquid separation clarification device which comprises a bottom shell and a volute plate, the bottom end of the volute plate is fixedly connected with the bottom shell, the bottom shell is conical, the bottom end of the volute plate is attached to the inner wall of the bottom shell, and the outer end of the volute plate and the bottom shell are jointly connected with a baffle. A spiral / volute-line-shaped / vortex-line-shaped flow channel is formed in the vortex-shaped plate, a water outlet of the spiral flow channel is formed above the baffle, mixed liquid needing solid-liquid separation flows from the inner ring end of the vortex-shaped plate to the water outlet along the spiral flow channel, and a plurality of discharging openings are formed in the bottom of the bottom shell in a penetrating mode. A plurality of discharge pipes communicated with the discharge ports are fixedly mounted at the bottom of the bottom shell; by arranging the bottom shell, the vortex-shaped plate, the baffle, the multiple discharging openings and the like, the advantages of three solid-liquid separation modes of horizontal flow precipitation, vertical flow precipitation and centrifugal separation are integrated, the sizes of D1 and D2 can be designed in a targeted mode according to the characteristics of materials needing to be separated, the precipitation position is controlled, and small occupied space and classified separation of the materials are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of solid-liquid separation, in particular to a volute solid-liquid separation and clarification device. Background Art

[0002] At present, the unpowered natural sedimentation devices used for solid-liquid separation and clarification are mainly in the form of horizontal flow sedimentation, vertical flow sedimentation and hydraulic centrifugal sedimentation, but they all have their own disadvantages as follows: 1. Horizontal sedimentation: The sedimentation effect is good, but it requires auxiliary sludge scraping equipment and occupies a large area. Large-scale radial flow is used, which is prone to uneven water distribution; 2. Vertical flow sedimentation: The sedimentation effect is general and is only used in small solid-liquid separation devices. When the sediment settles slowly, a higher sedimentation height is required (long sedimentation time); 3. Hydraulic centrifugal sedimentation is generally only used for granular materials. Because of its fast water flow speed, some fine particles need to travel a considerable distance in the horizontal section to settle, so it is only used to separate large particles. At the same time, the traditional vortex clarification device has no internal segmentation, and the material has an eccentric movement perpendicular to the travel distance during the travel, resulting in a long movement path and a long sedimentation time; In view of the advantages and disadvantages of the above-mentioned solid-liquid separation devices, the present invention proposes a volute solid-liquid separation and clarification device, which adopts the snail shell in nature as the basic form and combines the shallow sedimentation theory to set different cross-sectional areas in different sedimentation sections to achieve separation of different materials in different sedimentation sections. It combines the advantages of small footprint of vertical flow sedimentation tank and long travel path of horizontal flow sedimentation, and combines the advantages of centrifugal sedimentation to increase the centrifugal force in the direction perpendicular to the water flow, thereby realizing the single-sided rapid collection of materials. Summary of the invention

[0003] The purpose of the present invention is to provide a volute solid-liquid separation and clarification device to achieve separation of different materials in different sedimentation sections, combining the advantages of small footprint of vertical flow sedimentation tank and long travel path of horizontal flow sedimentation, and combining the advantages of centrifugal sedimentation to increase the centrifugal force in the vertical water flow direction, thereby achieving single-sided rapid collection of materials.

[0004] To achieve the above object, the present invention provides the following technical solutions: A volute solid-liquid separation and clarification device comprises a bottom shell and a volute plate, the bottom end of the volute plate is fixedly connected to the bottom shell, the bottom shell is conical, and the bottom end of the volute plate fits against the inner wall of the bottom shell, the outer end of the volute plate and the bottom shell are connected with a baffle plate to form a spiral / volute line / vortex line flow channel in the volute plate, and an outlet of the spiral flow channel is formed above the baffle plate, and a mixed liquid to be separated from the solid and liquid flows from the inner ring end of the volute plate along the spiral flow channel to the outlet, a plurality of discharge ports are arranged through the bottom of the bottom shell, and a plurality of discharge pipes connected to the respective discharge ports are fixedly installed at the bottom of the bottom shell.

[0005] As a further solution of the present invention: the discharge openings are all in contact with the bottom end of the outer wall of the vortex plate.

[0006] As a further solution of the present invention: the bottom surface of the spiral flow channel is an inclined surface, and the discharge ports are all located at the lowest end of the inclined surface.

[0007] Compared with the prior art, the present invention has the following beneficial effects: The present invention combines the advantages of three solid-liquid separation methods, namely, horizontal flow sedimentation, vertical flow sedimentation and centrifugal separation, by setting a bottom shell, a vortex plate, a baffle and multiple discharge ports. The size of D1 and D2 can be specifically designed according to the characteristics of the material to be separated to control the sedimentation position, realize rapid sedimentation and separation of the material, and save working space. The present invention can achieve low land occupation and classified separation of materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a structural schematic diagram of the volute solid-liquid separation and clarification device.

[0009] Figure 2 It is a schematic diagram of the top view of the volute solid-liquid separation and clarification device.

[0010] Figure 3 It is a schematic diagram of the cross-sectional structure of the volute solid-liquid separation and clarification device.

[0011] Among them, the bottom shell 1, the vortex plate 2, the baffle 3, the water outlet 4, the discharge pipe 5, the discharge port 6, the first discharge port 7, the second discharge port 8, the third discharge port 9, the fourth discharge port 10, the fifth discharge port 11, and the material 12. DETAILED DESCRIPTION

[0012] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0013] See also Figures 1 to 3 In the embodiment of the present invention, the volute solid-liquid separation and clarification device comprises a bottom shell 1 and a volute plate 2, the bottom end of the volute plate 2 is fixedly connected to the bottom shell 1, the bottom shell 1 is conical, and the bottom end of the volute plate 2 is in contact with the inner wall of the bottom shell 1, and the outer end of the volute plate 2 and the bottom shell 1 are connected with a baffle 3 to form a spiral / volute line / vortex line flow channel in the volute plate 2, and the plane spiral line formed by the volute plate 2 correspondingly projecting on the horizontal plane in the vertical direction is a plane vortex line or a plane spiral line The positive projection curve formed by the projection on the horizontal plane, and the water outlet 4 of the spiral flow channel is formed above the baffle 3, and the mixed liquid to be separated from the solid and liquid flows from the inner ring end of the volute plate 2 along the spiral flow channel to the water outlet 4 ( Figure 2 The dotted arrow in the figure indicates the flow direction of water flow), a plurality of discharge ports 6 are arranged through the bottom of the bottom shell 1, and a plurality of discharge pipes 5 connected with each discharge port 6 are fixedly installed on the bottom of the bottom shell 1. Specifically, there are five discharge ports 6, namely a first discharge port 7, a second discharge port 8, a third discharge port 9, a fourth discharge port 10 and a fifth discharge port 11.

[0014] Furthermore, in one embodiment of the present invention, the discharge openings 6 are all in contact with the bottom end of the outer wall of the spiral plate 2 .

[0015] Furthermore, the bottom surface of the spiral flow channel is an inclined surface, and the discharge ports 6 are all located at the lowest end of the inclined surface.

[0016] By adopting the above scheme, the solid-liquid mixture to be separated enters the device from the center of the spiral plate 2, and uses gravity or water inlet pressure to push the water flow to gradually flow toward the water outlet. The conveying pipeline of the solid-liquid mixture extends from the top of the spiral plate 2 into the inner side of the spiral plate 2, and the axis of the water outlet end is tangent to the inner wall of the spiral plate 2. The sedimentation process of the solid-liquid mixture in the spiral flow channel is the same as the horizontal sedimentation. As the density of the sedimentation material increases, the sedimentation distance becomes shorter, the sedimentation distance becomes closer to the front, and the density of the material discharged from the first discharge port 7 to the fifth discharge port 11 decreases successively. Therefore, according to this principle, it can be used to separate materials with different sedimentation properties to achieve the purpose of segmented recovery. Figure 3 In the figure, the symbol a represents the water flow perpendicular to Figure 3 The direction of the flow is inward from the paper surface, and the symbol b represents the direction of the flow perpendicular to Figure 3 The direction of flow outward from the paper.

[0017] In addition, under the guidance of the vortex plate 2, materials with different densities from water will be gathered toward the center of the volute due to inertia. Therefore, according to the principle of shallow sedimentation, the size of D1 in the figure (that is, D1 is the pitch of the plane vortex line (plane spiral line), and the line pitch of the plane vortex line (plane spiral line) is proportional or quantitatively corresponding to the pitch of the standard conical spiral line of the plane vortex line (plane spiral line) formed by the vertical orthographic projection) can be designed according to the material to be precipitated. The larger D1 is, the larger the cross-sectional area is, the lower the flow rate is, and the longer the time available for sedimentation is. At the same time, when the surface load of the sedimentation is constant, the length of D2 (i.e. D2 is the height of the bottom shell 1) can be designed specifically, so as to change the flow area without changing the surface load, thereby adjusting the flow rate and the sedimentation time; In summary, the present invention combines the advantages of three solid-liquid separation methods, namely, horizontal flow sedimentation, vertical flow sedimentation and centrifugal separation, by providing a bottom shell, a vortex plate, a baffle and multiple discharge ports. The dimensions of D1 and D2 can be specifically designed according to the characteristics of the material to be separated to control the sedimentation position and achieve rapid sedimentation and separation of the material.

[0018] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A volute solid-liquid separation and clarification device, characterized in that: The invention comprises a bottom shell (1) and a vortex plate (2), wherein the bottom end of the vortex plate (2) is fixedly connected to the bottom shell (1), the bottom shell (1) is conical, and the bottom end of the vortex plate (2) is in contact with the inner wall of the bottom shell (1), the outer end of the vortex plate (2) and the bottom shell (1) are connected to a baffle plate (3) to form a vortex linear flow channel in the vortex plate (2), and a water outlet (4) of the spiral flow channel is formed above the baffle plate (3), and a mixed liquid to be separated from solids flows from the inner ring end of the vortex plate (2) along the spiral flow channel to the water outlet (4), and a plurality of discharge ports (6) are provided through the bottom of the bottom shell (1), and a plurality of discharge pipes (5) connected to the respective discharge ports (6) are fixedly installed at the bottom of the bottom shell (1).

2. The volute solid-liquid separation and clarification device according to claim 1, characterized in that: The discharge openings (6) are all in contact with the bottom end of the outer wall of the spiral plate (2).

3. The volute solid-liquid separation and clarification device according to claim 1, characterized in that: The bottom surface of the spiral flow channel is an inclined surface, and the discharge openings (6) are all located at the lowest end of the inclined surface.

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